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i7 930 @ 4.2GHz overclock multi throttle in Prime 95?

post #1 of 16
Thread Starter 
Hi, So I am overclocking a i7 930 on a EVGA x58 LE and currently seem to have it stable @ 4.2GHz by feeding it 1.35v under water and stays under 60C. The Turbo and Speedstep stuff is disabled in the BIOS.

I was running Prime95 for the last couple of hours when I noticed on CPU Z that when starting Prime 95 the CPU has 4.2GHz @ 100% load but after some time 5 - 10 mins the multi drops from 21 to 12 making the CPU speed drop to 2400 ~ Mhz / 2.4GHz. Sometimes it comes back up to 4.2GHz and then drops back. So I was concerned if this is normal behavior or am I missing something

HELP!
post #2 of 16
Same exact problem with mine:



Read about it here--> Why is my 920 downclocking to 2302Mhz under LOAD?

Since then I've changed my settings. Right now I have disabled CPU TM FUNCTION and CE1 and I even enabled LLC, which you might not want to do.
Edited by i7monkey - 10/18/11 at 1:20am
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post #3 of 16
I think your machine needs more voltage, but also try this running this command to test for corrupt system files which might be causing issues.

Run the Dos Command Prompt as an administrator and type "sfc /scannow", and let it test for errors.

My machine never throttled in the past, but now I've had to disable CE1 and CPU Tm function. Recently I've had more voltage problems so I enabled LLC as well, which I you don't necessarily have to do. For now disable CE1 and CPU TM function and give it a little more voltage or just lower your overclock to 4ghz and be happy with it there.
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post #4 of 16
Thread Starter 
thanks, I Guess TM = Turbo mode?
But I cant seem to find the rest of these settings(LLC and CE1) on my BIOS. Any Where!

Edit: Just read your last post..okay will try that now
post #5 of 16
Thread Starter 
Nope, Ran Wndows CMD and "sfc /scannow"
Windows Resource Protection did not find any integrity violations



Found the C1S option ts listed as Cx1 under CPU function in the bios.
Not sure on LLC though..
post #6 of 16
LLC stand for "Load Line Calibration". Many people disable it and I think you should leave it disabled for now too.


A word of caution, these are old settings and are not my current settings, so DO NOT follow these settings, I'm just showing you where LLC, CPU TM, and CE1 are:





CE1, CPU TM Function are found in the "CPU Configuration" section under the "Advanced" tab of the BIOS.









For now, disable CE1 Support, CPU TM function, and Load-Line Calibration.

Test for stability again and if you fail, trying upping the voltage a tiny bit and see what the gives you.
Edited by i7monkey - 10/18/11 at 2:41am
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post #7 of 16
Thread Starter 
Hey Thanks Bud, think I found the issue. Its the CPU TM (Thermal management) Causing the throttle. I went into Real Temp and it says TJ Max 57C... in Prime my CPU goes up to 85C on my H70.

Cant Find the darn Load-Line Calibration(I think t might be called Vdrop) and CPU TM function in my Bios anywhere. Its a EVGA x58 SLi LE board if you didn't know...Any idea where they might be at ?
Edited by TheBirdman74 - 10/18/11 at 2:44am
post #8 of 16
Quote:
Originally Posted by TheBirdman74 View Post
Hey Thanks Bud, think I found the issue. Its the CPU TM (Thermal management) Causing the throttle. I went into Real Temp and it says TJ Max 57C... in Prime my CPU goes up to 85C on my H70.

Cant Find the darn Load-Line Calibration and CPU TM function in my Bios anywhere. Its a EVGA x58 SLi LE board if you didn't know...Any idea where they might be at ?
Check my edit just above your post.
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post #9 of 16
Thread Starter 
Quote:
Originally Posted by i7monkey View Post
Check my edit just above your post.
I remember having the CPU TM function on my ASUS board in the LGA775 days.
But not on this EVGA one I double checked it too. Cant seem to have it / or able to find it anywhere. I am sure the CPU Thermal Management (TM) must be causing this since its set so low only 57C to TJ max!!
post #10 of 16
Ok, your BIOS is a little different and I'm not familiar with it. Check out OCN's official EVGA MB thread for guidance.

They've even got BIOS templates that you can follow too (It's in the last bit of the first post of the thread).
Edited by i7monkey - 10/18/11 at 2:55am
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